Cut-off means for metal-gathering heads.



J. W, ROBINSON. ms ma META! 2 ATHERING BEA U8.

CATION Pnfnr) APR 17, m1

APPLI Patented Mar. 23, 1915.

Wjjl/ENTQR Maw 1 9" 0 W STAT i JOSEPH W. ROBINSON, 0F TOLEDO, QHIO.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed April 17, 1914. Serial No. 832,486.

and useful Cut-OfY Means for MetaLG-athering Heads; and I do hereby declare the following to be a full clear, and exact descriptionv of the invention, such as will enable others skilled in the art to which it uppers tains to make and use the same, reference being had to the adcompanying drawings,

and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to cutoff means for metal gathering heads or devices, and hasparticular reference to use in connection with that type of glass working ma.- chine in which the gathering mechanism is mounted on a moving support and has an arm, which carries a gathering head or device and is operable to periodically dip said head into the metal in a glass pot and then to Withdraw it from the pot with the gathered metal. The invention is not re' stricted to this use, however, as it may he used. in any connection for which it may be adapted or appropriate.

The object of my invention i's the provi sion of simple and eflicient means for use in connectiongwith molten metal gathering heads or the like, and operable to cutoff or sever the surplus metal from the gathering head after being withdrawn from the metal in the pot, the metal being severed in such manner as to avoid,'or nearly avoid, the leaving of teats or irregular surfaces on the exposed portion of the metal in the gathering head.

The invention is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying drawings, in which,-

Figures 1 and 2 are different elevations of a gathering head equipped with my invention, with the cut-off means in open po sition. Fig. 3 is a cross-section of the gathering head on the line :12, a: in Fig. 5. Fig. 4 is a bottom view of the gathering head and cut-off means with the latter open, and igs. 5 and 6 are different central vertical sections of the gathering head illustrated with the cut-off means removed.

Referring to the drawings, 1 designates a gathering ram or arm of the type used in automatic glass working machines, and 2 the gathering head or vacuum cup it the outer end of the ram. The ram 1. is provided longitudinally therethrough with a passage 3 leading to any suitable source of suction creating means. The gathering cup 2 is fitted into the outer end portion. of the ram with its cavity in communicatidn with the ram passage 3 through a slotted form of port 4, the present instance, whereby a suction action may he created within the cup from the passage 3 when it is desired to draw a (illfifltlty of metal into the cup and retain it therein. It will be understood that this form of r: m and gathering cup are conventionally shown and are merely for the purpose of illustration, and that the use of my improved cut-oil means is not restricted to use in connection therewith.

The cutoff means comprises two knives 5, 5 which are carried at. the free ends of respective arms (3, 6 and adapted to he swung under the open end of the gathering cup 2 from opposite sides thereof with their cutting, edges in lapped shearing relation. The outer end of thegathering cup and the knives 5, 5 are cachof arcuate form, being struck from the swinging center of the arms (3- G to enable the lmives to swing under the cup in close cutting relation thereto. The arms 6, 6 are of inverted L-form or have 'their upper ends angled inwardly toward each other and carried by a common pivot 7, which is scoured to the forward end portion of the ram 1 over the gathering cup 2. The pivoted ends of the arms 6 lap each other within a slot 8 in the gathering ram into which they project. 7

A shaft 9 is carried by the ram 1 transversely thereof and at the rear of the knife arms (3, 6, being jiuirnalcd, in the present instance, in hearing brackets 10 rising from the top of the ram. An arm 11 fixedly p'rojects forwardly from the shaft 9 between the brackets 10, and is provided at its forward or free end with a cross-arm 12 which is disposed substantially over the inwardly angled upper end portions of the knife arms 6, G and has connection therewith through the links 13, 13. one link being connected to each arm 6. The ends of the links 13 are in universal joint, or ball and. socket, connection with the respective arms (3 and 12, as shown at 14, thus permitting the arm 11 the arms 6, 6 on an axis which is at rightangles to the axis 9. An arm 15 is fixed to one end of the shaft 9 and has connection with any suitable actuating means through a link 16, which link forms a part of such means. As the means employed for actu ating the movements of the arm 15 may be of numerous forms, it is not thought necessary to show the same, especially as such means forms no part of the present invention. It is evident that the arms 11 and 15 and shaft 9 combine to form a bell-crank type of lever. Upon a rearward movement of the link or draft-rod 16, from whatever cause the arm 11-12 of the bell-crank lever is swung downward, thereby communicating an inward swinging movement to the knife carrying arms 6 to cause the knives 5 to :swing under the gathering end of the cup 2 and to have lapped shearing engagement at their inner or cutting edges. edges of the knives are preferably of opposed broadened V-form to facilitate the sharing action of the knives as they lap one another. After a out has been made the parts are returned to their normal open position, as shown in Figs. 1, 2 and 4, by a coiled contraction spring 17, which connects the draft-rod 16 to a point on the ram 1, or any other suitable means may be provided for the purpose.

I wish it understood that my invention is not limited to any specific construction or arrangement of the parts as numerous modifications may be made without departing from the SPlIlli thereof.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,

l. The combination with a gathering cup, of'a pair of arms pivoted to the upper closed end of the cup and extending outward and downward therefrom at opposite sides of the cup and having blades at their free ends swinging in shearing relation under the cup when the arms are swung inward, and a single mechanism movable with said cup and operable to impart opposed swinging movements in unison to said arms.

'2. The combination with a ram and a gathering cup carried thereby, of a pair of Lshaped arms mounted at one end on.a common pivot at the upper closed end of said cup and thence extending outward and downward at opposite sides of the cup and terminating at their free ends in trans vcrsely projecting blades for swinging under the lower open end of the cup in shearing relation when the arms are swung inward, a lever pivotally carried by said ram adjacent to the upper end of said cup for The cutting rocking movements in a plane lengthwise of the ram and cup. connection between said lever and each of said arms, and means for rocking the lever to impart inward and outward swinging movements to the arms.

3. The combination with a gathering cup, of a pair of arms mounted on a common pivot at the upper closed end of said cup and extending outward and downward at opposite sides of the cup and terminating at their free ends in inwardly projecting blades for swinging in shearing relation un' der the lower open end of the cup, a lever pivoted adjacent to the top of said cup and having a T-arm, link connection between the free ends of said T-arm and the respective outwardly extending'upper end portions of said pivot arms for causing the like opposed swinging movements to be imparted in uni- 7 son to said arms from a rocking of said lever, and means operable to rock said lever.

The combination with a gathering ram and a gathering cup carried thereby, of a pair of arms pivoted to the cup adjacent to the closed end thereof and having shearing parts at their free ends for swinging under the open end of the cup in lapped shearing relation when the arms are swung inwardly, a lever pivoted lo the ram, draft means operable to move said lever, and link connection between said lever and each of said arms having universal joint connection with the respective lever and arms.

5. The combination with a gathering cup,

of a pivot disposed at the closed end thereof, arms carried by and projecting in opposed relation from said pivot and thence lengthwise of the gathering cup at opposite sides thereof, knives carried by said arms at the free ends thereof and adapted to swing under the gathering end of the cup and to have lapped shearing engagement when the arms are swung inwardly, said knives having broadened V shaped cutting edges, a lever pivoted adjacent to said head with its pivot at right angles to the pivot of said-arms, one arm of said lever having a control member attached thereto and the other arm having a cross-head which is disposed above the inner end portion of said knifev carrying arms, and links disposed between each of said knife carry-- ing arms and the adjacent end portion of said cross-head and having universal joint connection with the respective parts.

In testimony whereof, I have hereunto signed my. name to this specification in the presence of two subscribing witnesses.

JOSEPH W. ROBINSON.

Witnesses P. D. WAGNER. F. E. Ann 

